Child-proof window and balcony door



May 14, 1968 G. A. ZANDELIN 3,382,61

CHILD-PROOF WINDOW AND BALCONY DOOR Filed March 24, 1966 2 Sheets-Sheetl May M, 9 G. A. ZANDELIN 3,382,6l

CHILD-PROOF WINDOW AND BALCONY DOOR Filed MarCh 24, 1966 2 Sheets-Sheet2 United States Patent O 3,382,611 CHILD-PROOF WINDOW AND BALCQNY DOORGustaf Adoli Zandelin, Kungsgatan 58B, Malmo, Sweden Filed Mar. 24,1966, Ser. No. 537,151 5 Claims. (Cl. 49-67) ABSTRACT 0F THE DISCLOSUREA Window or balcony door has two inwardly horizontally swinging sashesthe outer of Awhich is spaced from the top and bottom of the windowframe to provide upper and lower ventilation openings. These openingsare downwardly outwardly directed to render them weatherproof. Thesashes may be selectively individually locked.

The present invention relates to windows and balcony doors of the typethat have an outer and an inner frame, the frames being independentlyrotatable about hinges on a casement frame.

The object of the invention is to produce a window or balcony door inwhich it is necessary to open only the inner window-frame for thepurpose of ventilation, while the outer window-frame remains locked in aclosed position to prevent small children falling out of the window.

That which mainly characterizes the window, according to the invention,are the spaces situated above and below the outer window-frame in theeasement frame, which are in communication with the open air, and whichallow, after the inner window-frame has been opened, stale air to ow outand fresh air to ilow into the room that is to be ventilated.

The window, according to the invention, does not allow heavy rain topenetrate during ventilation, and simultaneously prevents illegal orunwanted entry through the window.

The invention will be described while referring to the appended drawingsof an embodiment.

FIG. l shows a front elevation of the window.

FIGS. 2-4 show sections of the window.

FIG. 2 shows a horizontal cross section along the line 2-2 in FIG. 3.

FIG. 3 shows a vertical section along the line 3-3 in FIG. l.

FIG. 4 represents a vertical section similar to that in FIG. 3, but withthe inner window-frame open, to show how ventilation can be efeetedthereby.

The numeral 1 indicates a Casement-frame comprising an upper part 2, alower part 3 and side parts 4 and 5. The easement-frame, as is madeclear by FIGS. 2-4, comprises an inner Casement-frame 6, and connectedtherewith, an outer-easement frame 7 with a somewhat smaller opening. Inthe space, which is surrounded by the casement-frames 6 and 7, is anouter window-frame 9, sup ported by vertically mounted rotatable hinges8 on the one side, said window-frame 9 having a glass pane 10 insertedin an inside edge recess and held in position by means of Windowmolding. An inner window-frame 12 is supported on vertically mountedrotatable hinges 11 on the easement-frame 6, with a glass pane 13inserted in an inside edge recess, in said window-frame 12, -being heldin position -by window molding.

Thus, the window frames 9 and 12 are independent of rice each other andcan be rotated about their hinges 8 and 11 respectively.

The inner window-frame 12 is provided with a lockinghandle 14 on theinside, by means of which locking bars or the like 16 can be suitablyactuated in conjunction with locking-plates 15 on the easement frame 6.

The outer window-frame 9 is likewise provided with a locking device,which is generally indicated by the numeral 17, and which is preferablymade child-proof, i.e. so that it cannot be operated and opened by smallchildren. The child security can be achieved by, for example, a specialkey being necessary for locking and unlocking, said key being imadeinaccessible to children.

There are many types of locking-devices on the market, which can beregarded as child-proof, and are, therefore, suitable for utilizationwith the window according to the invention.

As is apparent from FIGS. 3 and 4, the upper edge 18 of the outerwindow-frame 9 does not extend completely up to the inner surface 19 ofthe easement-frame 6, leaving a space 20, which is connected with theopen air by means of a vertical channel 21 between the outerwindow-frame 9, the upper part of the outer Casement-frame 7, and aboard-strip 22 tted on the said upper part which strip serves as aprotection against rain.

In a similar way, the lower surface 23 of the outer window-frame 9 doesnot extend completely down to the inside surface 24 of theeasement-frame 6, but instead a space 25 is left, said space beingconnected with the open air by -rneans of elongated recesses 26 in thecasement-frame 7 (two recesses are shown in FIG. l).

When the inner window-frame 12 is unlocked, by means of the handle 14,and the window-frame 12 is swung out about its hinges 11, ventilation isobtained as indicated by the arrows 27 and 28 in FIG. 4, despite theouter window-frame 9 being locked in a closed position. Stale inside airis then able to flow out, in the direction of the arrow 27 into thespace 20 through the channel 21 in the upper edge of the outerwindow-frame 9, said channel being connected with the open air,simultaneously as fresh air Hows in through the recesses 26 in the outereasement-frame 7 and the space 25 in the lower surface of the outerwindow-frame 9.

Due to the child-proof locking of the outer windowframe 9, it is ensuredthat no small child runs the risk of falling out, despite the windowbeing adjusted for ventilation.

When it is so desired, the outer window-frame 9 can also be opened, eg.when cleaning, by unlocking and swinging it about its hinges 8.

Different modications of the invention are, of course, possible withinthe scope of the claims.

I claim:

1. A closure comprising a frame, an inner sash and an outer sash, meansindependently rotatably mounting said sashes on said frame for inwardlyopening horizontal swinging movement about vertical axes between openand closed positions, both said sashes being glazed, there being spacesabove and below said outer sash between said outer sash and said framein the closed position of said outer sash, said spaces communicatingwith the open air, said inner sash closing said spaces in the closedposition of said inner sash, and means for preventing unauthorizedopening of said outer sash.

2. A closure as claimed in claim 1, said last-named means comprisinglatch means accessible only from the inner side of said outer sash.

3. A closure as claimed in claim 2, said latch means being of the typerequiring operation by a separate key.

4. A closure as claimed in claim 1, said spaces above and below saidouter sash being defined `by downwardly outwardly directed channelsthereby to render said spaces weatherproof.

S. A closure as claimed in claim 1, one of said spaces being defined byan opening through said frame.

References Cited UNITED STATES PATENTS Armstrong 49-64 X Zimmermani60-92 X Fisk 49-67 X Hacker 49-67 Andree 49-67 Falotico 49-63 X 10DAVID J. WILLIAMOWSKY, Primary Examiner.

DENNIS L. TAYLOR, Examiner.

